History in Three Sisters' Story takes place in the capital of Japan. It is a huge city where there is no place for weaklings on the streets. Cunning, greed, and the use of force flourish here. The main character of the story is called Koichi Sanada. His life since childhood has been filled with tragic events. First of all, the company where his father worked went bankrupt. Unable to bear the burden of responsibility and despair, he commits suicide. In order to feed and raise two brothers, the mother works without rest. This undermines her health, and soon she goes after her father.

In Three Sisters' Story, the user will have to observe and take part in further events. After all, the character and his brother Eiichi decide to take revenge on Shoji Okamura. This is a hardened criminal who is guilty of driving the head of the family to suicide. And accordingly, in all the troubles of the family. In this case, you will have to conduct your own investigation. Move around the city, look for evidence and proof. Only they will help prove the villain's participation in criminal machinations and scams. This will lead to a fair punishment. At the same time, the young men have a completely opposite view of what is happening. The eldest son dreams only of bloody revenge, when the main character suggests leaving everything as is. Against this background, a quarrel and conflict occur. The player will have to control the guy, enter into dialogues, perform certain tasks. The development of the storyline will depend on the steps taken.